Cloeren: Improved performance

As an alternative to plated dies, Cloeren is using two standard materials of construction; hot-work alloy H13 (DIN 1.2344) and 15-5PH (DIN 1.4540) stainless steel, both through-hardened to 40 Rockwell C (Rc). While these materials cost substantially more than typical alloy mould steel, Cloeren will offer these constructions at the same price as a plated die. Customers will benefit from shorter delivery times and an extended warranty of two years on dies made with these materials. Extrusion dies are typically constructed from variations of mould steels such as P-20 (DIN 1.2311/1.2330), and are most commonly plated with nickel or chrome. Initially, such steels were mildly hardened to about 30 Rc. Plating was added for three primary purposes, to increase surface hardness, to enhance corrosion resistance, and in some cases, to improve wear resistance. “Plating is the weakest link of an extrusion die, both in the manufacturing process and in field performance and reliability,” said Cloeren President, Peter Cloeren, Jr. “It is the single largest variable in the manufacturing process and the most unpredictable variable in the field. Causes of plating failure vary.” Employing higher alloy materials eliminates the potential of plating failure and enhances the overall robustness and dependability of a die.

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